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J. W. COREY.

FBBDING MEGHANISM FOR SEWING MACHINES. No. 325,396. Patented Sept. 1,1885;

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UNITED STATES JASPER. YV. COREY, OF CINCINNATI,

PATENT OHIO, ASSIGNUR TO HENRY MHL- HAUSER, OF SAME PLAGE.

FLECEEEATIGN forming part of Letters Patent No. 325,396, datedSeptembe;l 1, 1885.

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Be it known that I, JASPER W. COREY, a citizen of the United States,residing at Cincinnati, in the county of Hamilton and State of Ohio,have invented certain new and useful Improvements in Feeding Mechanismfor Sewing-Machines, of which the following is a specication, referencebeing had therein to the accompanying drawings.

Hy invention relates to that class of sewingmachine feeding mechanismsin which the feedbar is operated by a feed-lever receiving its verticalmovements from a projection on the shuttle-lever, and a co-operatingspring, said lever being vibrated horizontally to feed the work by meansof a earn on the driving-shaft, connected by a rod or bar with the rearend of the feed-lever, said rod or bar having a pin engaging an inclinedblock, and the feeding movements of the said lever being varied byadjusting said block to different positions.

The object of my invention is to produce a feeding mechanism of theclass above referred to which will be simple in construction, efficientin operation, and easily regulated, and in which the horizontal orfeeding movements will be positive in both directions.

In the drawings, Figure 1 is as'ection through the vertical portion ofthe bracket-arm of a sewing machine embodying my invention. Fig. 2 is adetail View of the upper end of the bar which connects the feed-cam withthe feedlever. Fig. 3 is a detail view of the shuttleoperating eccentricand a portion of its connecting-rod. Fig. 4 is a bottom view of mysewing-machine. Fig. 5 is a detail view of the rear portion of thefeed-lever and adjacent parts.

The main or driving shaft A (having the usual ily-wheel and pulley) isjournaled in the upper portion of the bracket-arm B, and the latter isattached to the bed-plate C in any suitable manner.

To the main shaft A is secured an eccentric, D, connected by a strap androd, E, with an angular or bell-crank lever, F, the lower arm of whichis provided with a ball working in a fork on the rear 'end of theshuttle-lever G, the latter having a laterally-extending stud or arm, g,which is preferably provided at its outer end with an anti-frictionroller, f.

To the main shaft is also attached the feedcam 8, which works betweentwo offset projections or ribs, 9, forming part of the yoke 10 on theupper end of a vertical connectingbar, 11, the latter having at itslower end a rigid horizontal arm, 7, the outer end of which is providedwith a pin or roller working in a slot in an inclined regulating-block,12.

The block 12 is attached to or formed integral with a short shaft orstud pivoted in a lug, 13, depending from the bed-plate C, and to thesaid stud, Von the side of said lug opposite to said block, is rigidlysecured a regulating-arm, 14, (indicated by dotted lines in Fig. 1,)passing upward through the bed-plate, and having at its upper end aset-nut, 15, iinpinging against a curved projection, 1G, on the saidbed-plate. lVhen the set-nut 15 is loosened, the arm 14 may be moved tovary the inclination of the block l2, after which the said set-nut maybe screwed against the curved projection 16 to hold the said arm and theblock`12, which is rigid therewith, in place.

To the horizontal arm 7 of the connectingbar 11 is attached one end 'ofa link, 17, and the feed-lever 18 is loosely connected with the oppositeend of said link, this connection being preferably made by aball-and-socket joint. A spring, 19, is connected with the link 17, andwith a pin, 20, on the inside of the bracket-arm, said spring thusserving to lift the said link and the rear end of the feedlever, theforward end of the said lever having a ball-and-socket or other similarloose connection with the feed bar 21. The fulcruni-screw 22 of thefeed-lever is so formed as to afford a universal joint, as is commonwith this class of universally-movable feedlevers; and between the saidfulcrurn-screw and the rear end of the said feed-lever is formed a bendor incline, 23, against which the outer end of the stud or arm g or theroller thereon impinges, these parts being kept in constant contact bythe stress of the springl9.

The operation of the above-described mechanism is as follows: When themain shaft is rotated, the eccentric thereon, acting through theconnecting-rod E and bell-crank lever F, will impart the usual vibratorymovements to the shuttle-lever G, and the arnifg of thelatter, riding upthe bend or incline on the feed- ICO n v f.

lever,will raise the forward end of said lcver and thus lift thefeed-bar at theproper intervals. rlhe downward movements of the feedbarwill be effected by the spring 19, which lifts the rear end of thefeed-lever as the arm r/ moves backward during the vibrations of theshuttle-lever. The feed-cani 8, Working only against the parallelhorizontal ribs 9 of the yoke 10, will impart an intermittent upand-downmovement to the connecting-bar 11, and the inclined slot of the block12, in which the stud at the end of said bar works, will cause the lowerend of the latter to vibrate horizontally, and thus, through the link 17and feed-lever, the proper horizontal movements at intervals will beimparted to the feed-bar, these movements being positive in bothdirections, and their extent and the resulting length of thestitchesbeing determined by the angle of inclination of thefeed-regulating block 12.

It will be understood that after the forward end of the feed-lever hasbeen lifted the arm g will Work for a short interval against a straightportion of said lever to keep the forward end thereof raised while thefeed-bar is being moved forward to feed the work along.

I claim as my invention 1. In a sewing-machine, the combination, withthe driving-shaft and its cam, of a connecting-bar having at its upperend a yoke and at its lower end a rigid horizontal arm provided with apin, a regulating-block on one side ofthe machine, having a slot inwhich said pin works, a feed-bar, a feed-lever on the side of themachine opposite to the said block, and a link connecting said leverwith the said connecting-bar, substantially as set forth.

2. In a sewing-machine, the combination; with a shuttle-lever having alaterally-projecting arm, and mechanism for vibrating said lever, of afeed-bar, a feed-lever having a bend or, incline, anintermittingly-reciprocated connecting-bar, having at its lower end ahorizontal arm provided with a pin, a regulating-block having a slot inwhich said pin works, a link connecting said bar with the saidfeedlever, and a spring for lifting the rear end of the feed-lever,substantially as set forth.

3. In a sewing-machine, the combination, with a feed-bar and anintermittingly-inoving operatingbar, having a rigid horizontal armprovided with a pin, of a feed-lever on one side of the machine, a linkconnecting said feed-lever with said operating-bar, a slottedregulating-block on the side of the machine opposite to said feed-lever,in which said pin works, an adjusting-arm rigidly connected .with saidblock and provided with a set-nut,

and a bed-plate having a curved projection against which said nutimpinges, substantially as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

JASPER W. COREY.

Vitness'es:

J. A. STOEHR, S. E. HENDERsoN.

